The ZKR AIR wireless nurse call system Plug-and-play structure, fast and reliable 433 Mhz encrypted communication protocol. The calls made from the Patient's Handset or WC are delivered directly to the nurse panel. If the distance between the call buttons and the nurse panel is too large, it is possible to extend the coverage area with signal repeater units. nurses can be reported when the calls to the call panel are requested. Pager integration on the system is possible.